We're in the process of updating all our core infrastructure and want to upgrade from our current patched 7.1.2 on Ubuntu 10.04 to the latest 8.0 release on Ubuntu 12.04. As we have full backup and restore capability is this as simple as using the web UI to do a full backup on our current system and then restoring that onto a newly installed Ubuntu12/ZCS8 server? We would presumably have to copy the domain and server settings such as spam relays etc but that's no big deal